Gas pressure regulator



Jan. 24, 1933. R M N 1,895,047

GAS PRES SURE REGULATOR Filed June 15. 1931 KKK Jjaae zzhrs -7214 Joyyearn/2n W Patented Jan. 24, 1933 UNITED STATES PATENT OFFICE RUDOLFNEUMANN, OF BERLIN-CHARLOTTENBURG, GERMANY GAS PRESSURE REGULATORApplication filed June 15, 1931, Serial No.

I the pressure prevailing behind it. With regulators of this design ithas been found that with great gas consumption the throttle valve doesnot open to a suflicient extent so that the pressure decreases at theplace of gas consumption. Therefore it has already been proposed tocompensate for this drawback by reducing as far as possible the gaspressure below the diaphragm to which end a simple nozzle is made use ofthe smallest passage area of which communicates with the spacebelow thediaphragm so that a greater sucking action is produced when largequantities of gas pass through the nozzle than with the passage of smallquantities. This increased sucking effect is then transmitted to thespace below the diaphragm whereby an additional opening of the valve isobtained when great quantities of gas are consumed.

Now my invention has for its object to improve the means that bringabout this sucking action. For it has been found that a satisfactorynozzle of this design must have a considerable length. Furthermore, inorder to obtain at all a satisfactory sucking effect of the nozzle,careful machining of the passage thereof is required. Now by the use ofsuch a simple nozzle, indeed, an additional 0 opening of the throttlevalve is obtained, but

* this additional opening is not suflicient to cause an increase ofpressure at the delivery end of the regulator, at themost uniformpressure being produced in so far as the increased losses of flow arecompensated for 0 within the regulator.

According to my invention a so-called multiplying nozzle is made use ofin lieu of the above-mentioned very long simple nozzle which multiplyingnozzle is composed of two or more nested small nozzles. This multiplyingnozzle not only possesses a notably smaller structural length but also afar greater sucking effect which not only enables to F cover the lossesof flow within the regulator but also to obtain an increase of pressureat 544,660, and in- Germany August 9, 1930.

the exit thereof. This increase of pressure is desirable because withgreat gas consumption the losses due to friction increase in the pipingup to the place of consumption. For,

with uniform pressure at the exit of the regulator these losses wouldcause decrease of pressure at the place of consumption, while a unlformpressure is obtained here by the increase of the pressure at the exit ofthe regulator, as it is the case with the arrangement according to myinvention.

My invention further provides to improve regulators of this design byeach of the individual nozzles through a duct communicating with theregulating chamber of the diaphragm, which ducts can be opened andclosed independently on one another. This arrangement enables toregulate the sucking action at the exit of the regulator at will.

In order that my invention may be clearly understood and readily carriedinto effect, two embodiments of the same are illustrated by way ofexample in the drawing which accompanies and forms part of thisspecification and in which Figure 1 is a vertical section of a gaspressure regulator designed in accordance with my invention,

Figure 2 is a section of the exit end of this regulator on an enlargedscale,

Figure 3 is a horizontal section on line IIIIII of Figure 2,

Figure 4 is a section similar to that of Figure 2 and shows the otherembodiment of my improved regulator in which each of the individualnozzles by a duct communicates with the regulating chamber, and

Figure 5 is a section on line V-V of Figure 4. I

Referring first to Figures 1 to 3, the entrance socket of the regulatoris denoted by 10, while 11 denotes a throttle valve with its seat 12.Valve 11 is carried by a stem 13 to the upper end of which is fixed bypin and eye connection 1,. a disc 14 surrounded by a diaphragm 17 andcarrying aweight 16. The diaphragm 17 and weight 16 are protected by acover 18 which has an aperture 19 leading to the outer air.

A further diaphragm 20 is fixed to the stem 13 below diaphragm 17 sothat a chamber 21 is formed by these two diaphragms and the casing 22,the latter being screwed or fixed in any other suitable manner to thecasing part 5 carrying the entrancesocket 10.

As will be seen, the incoming as is throttled by valve 11 and thenenters 51c deliver socket 23. Within this socket are dispos in such amannerthat the effect of the wellknown multiplying nozzle is obtained.These nozzles by a duct 29, and 27, the latter provided in the wall ofsocket 23, communicate with the chamber 21 formed by the dia- 16 hragms17 and 20 and forming the controling chamber of the regulator. The moregas flows through the exit of the regulator, the greater is the suctionand the more gas is sucked from chamber 21 so that the weight 20 19sinks whereby valve 11 is opened to a greater extent.

' The individual nozzles are preferably carried by sheet metal brackets28, see Figures 2 and 3, which project from the wall of part 25 23. Inthe embodiment shown only the nozzle 24 is connected by the duct 29, and27. to chamber 21, while in the other embodiment, Figures 4 and 5, fourindividual nested nozzles 30, 31, 32, and 33 are arranged each of whichcommunicates by the ducts 34, 35, 36,

and 37, respectively, with chamber 21. Regulating screws 38, 39, 40, and41 allow throttling of the ducts 34-37, Figure 5. Accordin to whichsuction is required at the exit o 85 the regulator, either the duct 34of nozzle 30 or, with the smallest suction, duct 37 of nozzle 33 isopened by setting the respective screw. These manipulations enable so toadjust the increase of pressure at the exit of the 40 regulator asrequired due to the length of the pipe leading from the regulator to theplace of consumption that the pressure at the latter remains uniform.

. Furthermore, I attain the following further possibility of regulationby means of the I arrangement illustrated in Fi res 4 and 5: I may openfor instance the ducts 34 and 37 that is the nozzles producing thestrongest and lowest sucking effect so that these two nozzles act inunison upon the chamber 21.

This results in the fact that when great quantities of gas flow throughthe regulator it is nozzle 30 which acts at the beginning and effectsstrong suction from chamber 21, which suction is then slowly reducedthrough duct 34 of nozzle 33. ThlS effect is desirable for instance whena further gas flame is to be lighted to which end the regulator is todeliver temporarily the gas under increased pressure.

What I claim and desire to secure by Letters .Patent is 1. A regulatorof the class described comprising a regulating chamber formed by twoseveral nested nozzles 24, 25, and 26 ed u on by the pressure prevailingbehind the re u lator, a throttlevalve cooperable with this diaphragm,the other diaphragmbelng adapted to shut ofi said chamber against theentrance ressure, at least two nested nozzles disposed ehind saidthrottle valve, and a communication from at least one of these nozzlesto said regulating chamber.

2. A regulator of the class described com: prising a regulatin chamberformed by two diaphragms one 0 which is adapted to be acted upon by thepressure prevailin behind the re ulator, a throttle valve coopera lewith this 7 aphra gm, the other diaphragm being adapted to shut off saidchamber against the entrance pressure, a plurality of nested .nozzlesdisposed behind said throttle valve,

and a separate communication from each of said nozzles to saidregulating chamber.

3. A regulator of the class described comprising a regulating chamberformed by two diaphragms one of which is adapted to be acted upon by thepressure prevailing behind the regulator, a throttle valvecooperablewith this diaphragm, the other diaphragm being adapted to shutoff said chamber against the entrance pressure, a plurality of nestednozzles disposed behind said throttle valve, a separate communicationfrom each of said nozzles to said regulating chamber, and means forseparately shutting ofi said separate com- .munications.

In testimony whereof I have aflixed my signature. I

, RUDOLF 'NEUMANN.

-06 diaphragms one of which is adapted to be act-

